Poetry's Theme

This peom is a little hard to follow. I feel like it begins by describing a pearning for a "beloved". "And now hese eager eyes shall have their will, these avid fingers feel the touch of those." Then in line 15 the peom begins to discuss the problems that have befallen Adam and Eve's children. It states " The multitudinous creatures of these glittering cities, why do they keep living 0nly in desire of death? These lovely fields, whose bloom is brusting out, why does only hunger keep growing in them?" These lines show lifes beautiful things coming to a negative end. People live only to die in the end and fields bloom only to continue hunger. After making these comments i believe he gos back into talking about his beloved "But the slowly opening lips of that saucy one, ah the cursed alluring lines of that body." This i find very confusing how he ends the poem by talking about her.